Painting apparatus



'Dec. 20, 1927.

w. w. ROCKWOOD PAINTING APPARATUS Filed May 2 1927 ATTOR N EY Patented Dec. 20, 1927.

warren ,sr Ares ATE- NT OFFICE. I

ROGKWVGOD, OF CHIGAGQfILLIlIOIS, A IGQ OR OF ONE-HALE TO: ADA R.

MELLISII, OLE CHICAGO, ILLINOIS.

PAINTING APPARATUS.

pli ation fil d y 3,

'lhis invention relates to certain novel improvements; in painting apparatus and more particularly .to a novel. construction for at booth inwhich garticles are surfaced by means of aso called spray gun.

H In. the :prior. art, spray; booths have been 1 constructed in which means was, provided for moving vair throughthebooth, and th s means-was usuallylocated so that. the hon- 10 zontalplane in. which it operated. was fixed.

It is. therefore the salient, obj ectof my nvention to provide a spray booth; in wh ch theair moving'meansmay be mounted at various levels.

-.A furtherobject of the invention is toyprovide a spray booth of the type descr bed which will be simplein,construct1on and economical to manufacture.

I Otherobjects will appear; hereinafter.

Til-he inventionconsists in the novel combination and arrangement of parts to -be hereinafter; described and claimed. 7

The invention will. be best. understoodby reference to the accompanying drawings showing the, preferred form "of construction andin which:

The preferredembodiment of my invention is, illustrated, in perspective elevation.

"Inorder to carry out the objectsof my invention, I provide a booth .10. which is;

preferably constructed; of sheetinetal. The

1 sides and topand bottom of thisi booth are preferably constructed of flat sheets-of; 'suit-. able metal and are fastened together in any approved-or desired manner.

of the booth opposite thisqopen-end is provided with a constructionwhichwill now be described in detail. Relatively narrow strips of-sheet metal 11 and 1 2 are attached tothe sidewalls and secured to the'inner-ed-gesof these-strips are sections 13 and 14: o-f socalled angle iron. Preferablyr-this angle iron is of the rightsangularrtype and one strips 11 and 12' in such a manner that the portions thereof which extend at right" angles to the portions secured to the sections 11 and 12 will be in alignment with the edges of these sections, thus providing an open space .therebetween. I

Mounted so as to close; the. open space be- One-end of the booth isopeniandthewallportion thereof is suitably secured to the,

1.927-: se i i Ne- 2:23.580-

tween the angle irons 18 and l t are aphirality of re ovab e p n ssi ha 1 ,-16...2.1.nd- 17. 1 The. magnit d of thesev panels 13. P116? erably such that their widths will embody; a

fixed I relation; for example, in; the; present nstan y he p n .1 t11; e:.-. tim aFthe width of the panel 17*, and thepanel; l6-is twicethe width of thefpaneLlT fllhese .P3i S; b y lip; portions which extend; at

right angles to the surface of the panel and which are adapted to be brought into; .-en

gagement with the angle irons l3 and 14L.

Suitable aligned openings are provided. in the-lip portions of the. panels and the angle irons and. detachable -securing, elements: such as the bolt and nut constructions18 extend through these openings so as to secure the to the booth 10, an exhaust fan 20 isypro- V vided. Adapted to have communication withthe interior of the housing 19 preferably'opposite the exhaust fan 20; is a. conduit 21. ,This. conduit 21 embodiesan elbow construction 22 so that a portionvof. said conduit shall extendx vertically. The vertical-ly .extending portion of the conduit 21 embodies plurality of sections 23', 24 and 25. The section-323 is adapted tobe arranged so that it-cambe slid ,into'the section Qtand the section24isadapted to be arranged sothat it can be slid into the-section25. This construction provides a telescopic arrangement:

for'the conduit whichserves a purpose to be brought forth presently.

As is wellunderstood in the art, articles ofvarious; sizes and descriptionsare surfaced or painted in; spray booths by' means of a socalledspray gun. It is apparent that if a large heavy casting is tobe sprayed it would be advantageous tovmount this castingvonthe floor of the booth in order that the operator would not be required to lift it onto a table.

'However, if smaller and easily handled,

pieces wereto sprayed it would be advantageous to locate these articles on a table.

Further, if desired,zsmall articles might be suspended from the top of the cabinet in order that they might be surfaced or painted. From the foregoing, it is apparent that the spraying is carried on at various levels in the booth. As is well understood, minute particles of the material being applied to the articles (such material being paint, enamel, and similar finishes or sand, in the case of sandblasting) are suspended in free condition in the housing. These particles are.

thrown off by the force of the impingement between the material and the article. It is readily apparent that it is highly advantageous to remove these particles from the housing, both from a standpoint of convenience to the operator and to prevent their settling on articles within the housingand on the housing itself. In orderto accomplish this, air moving means such as the exhaust fan 20 are provided.

As has been brought out in the preceding paragraph, articles of various sizes and de scriptions are adapted to be surfaced in the booth. It is apparent that if a'large article is being surfaced, which is located on the floor of the booth, it will be advantageous to have the fan 20 locatedin the position indicated in the drawings, for the air movement will be greatest in the horizontal plane in alignment with the fan. However, if a smaller size article is to be surfaced, which is tobe positioned on a table during the surfacing, it will be advantageous to have the fan mounted at a higher level. In order to accomplish this, the removable panel construction heretofore described is provided. l/Vhen it is desired to move the fan upwardly a certain distance the panel or panels'which represent the distance desired to be moved are removed. Then the means which secure the housing 19 to the angle irons 13 and 14 are removed and the housing 19 is moved upwardly untilthe upper surface thereof is in engagement with the panels remaining at the top which, it will be understood, are arranged so that they will close the upper portion of the opening b tween the angle irons. When the housing 19 is secured in this position the removed panels are then inserted below said housing and the device is then ready for operation.

From the foregoing, It is apparent that I have provided a spray booth construction which is such that the air removing means may be mounted on a horizontal level with the article being surfaced and therefore the force of air removal will be greatest at the point where it is most needed.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is ca-' pable of Variation and modification, without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth,

but desire to avail myself of such variations and modifications as come within of the appended claims.

Having thus described my invention, what I claim as new and desireto protect by Letters Patent is:

1. A spray booth having an open side, the wall of said booth opposite said open side being closed by removable panels and one side of a housing, a fan mounted in the wall f said housing that is juxtaposed tosaid booth, a conduit in communication with said said panels, housing, and conduit,

housing,

being arranged so that said fan maybe mounted at .variable horizontal levels. e v

2. A spray booth having oppositely disposed open sides, a plurality ofinterchange the scope able members forming a partial closure for one of said open sides, and an exhaust fan" housing adapted to co-act with said memhere to complete the closure of said side, a conduit adapted for communication with said housing embodying a telescopically ar- I ranged vertically extending portion, said changed with said members. 7 t

5. A spray booth having an open side, a plurality of interchangeable panels adapted to partially close said open side, and exhausting means embodying portions co-acting with conduit telescoping as said housing is intersaid panels'to complete the closure. of saidopen side.

6. A spray booth-including a sheet-metal enclosure having oppositely disposed open sides, relatively narrow strips disposed on one of said open sides in juxtaposition to the side walls of said enclosure, a plurality of correlated panels disposed, to partially close thespace between said strips, said panels being detachahly secured to said strips, and a housing having a side disposed in said space adapted to co-act with said panels to complete the closure of said space,

said housing being detachably secured to' said strips and embodying means for creating a draft through said enclosure. 3

7. A spray booth including a sheet metal enclosure having oppositely disposed open sides, relatively narrow strips disposed on.

one of said open sides in juxtaposition to the side walls of said'enclosure, a. plurality of correlated panels disposed to partially close the space between said strips, said panels being detachably secured to said strips, and a housing having a side disposed in said space adapted to co-act With said panels to complete the closure of said space, said housing being detachably secured to said strips and embodying means for creating a draft through said enclosure, a conduit in communication with said housing, said conduit embodying a Vertically disposed portion including telescopically arranged sections, said sections telescoping as said housing is interchanged With said panels.

In testimony whereof I aflix my signature.

\VALTER W. ROCKVVOOD 

